Open the EDL in text editor, double check that reel numbers are in EDL .

If they are there, then look at manual on EDL helper, especially the wildcard characters . It's a little tricky but there is a "test" button so you can quickly check what DaVinci is seeing as reel number.

You will need to turn on the helper as it is not enabled by default.

In case you wonder where I get this incredible knowledge ... I read the manual !

There are a number of ways to get Resolve to 'resolve' reel numbers from footage, that will have an effect on how the EDL is displayed in the Conform page.

In the Settings page > Master Project Settings go to the Conform options at the bottom of the page, and enable "Assist using reel names from the:", then choose whichever option you predict will get the best results.

The EDL does have reel numbers. When I import the same EDL into Media Express, the reel numbers show up just fine. I sent the EDL to Blackmagic tech support and they admitted the batch import from EDL feature was broken. This was in version 9.0.2. I hoped that 9.0.4 would have fixed it, but it looks like it is still broken.